INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

Introduced: January 2000

Description

F21Y is an indexing classification used to supplement and cross-reference documents related to light sources and light emission characteristics within the F21 lighting branch. It organizes patents by specific attributes such as the physical form of light sources (incandescent, fluorescent, LED, laser) and the color or spectral properties of emitted light. This classification facilitates retrieval and grouping of related technologies that share common source types or light characteristics across multiple primary lighting subclasses. F21Y does not independently classify inventions but serves as an auxiliary tool for systematic indexing and patent family navigation in the lighting field.

Title

Titles differ between systems:

IPC: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES , , and , RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

CPC: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

Full Title

Full titles differ between systems:

IPC:

INDEXING SCHEME ASSOCIATED WITH SUBCLASSES , , and , RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

CPC:

INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

Additional Content IPC

Light source Light sources The entity (e.g. light bulb, gas mantle, combustible charge) that generates light for a lighting device or apparatus. The light source of the lighting devices or lighting apparatus may be electrically powered (e.g. power is supplied by electric batteries, electric cells, electric generators, flexible cables for electric mains constructions), non-electrically powered (e.g. power is created by combustible fuels, triboluminescence) or a naturally occurring source of light (e.g. sunlight).

Of 16 combined children, 0 exist in both systems.

8 codes are CPC-only extensions, 8 exist only in IPC.

Note: 8 CPC extensions are marked as secondary classification only.

IPC defines codes here since 2000.

Child Classifications

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F21Y 101/00 Point-like light sources since 2000 IPC only IPC only
F21Y 103/00 Elongate light sources, e.g. fluorescent tubes since 2000 −3 IPC IPC only IPC only
F21Y 105/00 Planar light sources since 2000 −1 IPC IPC only IPC only
F21Y 107/00 Light sources with three-dimensionally disposed light-generating elements since 2016 −9 IPC IPC only IPC only
F21Y 109/00 Light sources with light-generating elements disposed on transparent or translucent supports or substrates since 2016 IPC only IPC only
F21Y 111/00 Light sources of a form not covered by groups since 2000 IPC only IPC only
F21Y 113/00 Combination of light sources since 2000 −2 IPC IPC only IPC only
F21Y 115/00 Light-generating elements of semiconductor light sources since 2016 −3 IPC IPC only IPC only
F21Y 2101/00 Point-like light sources 2nd only CPC only CPC only
F21Y 2103/00 Elongate light sources, e.g. fluorescent tubes 2nd only +3 CPC CPC only CPC only
F21Y 2105/00 Planar light sources 2nd only +1 CPC CPC only CPC only
F21Y 2107/00 Light sources with three-dimensionally disposed light-generating elements 2nd only +9 CPC CPC only CPC only
F21Y 2109/00 Light sources with light-generating elements disposed on transparent or translucent supports or substrates 2nd only CPC only CPC only
F21Y 2111/00 Light sources of a form not covered by groups F21Y2101/00-F21Y2107/00 2nd only CPC only CPC only
F21Y 2113/00 Combination of light sources 2nd only +3 CPC CPC only CPC only
F21Y 2115/00 Light-generating elements of semiconductor light sources 2nd only +3 CPC CPC only CPC only

Top Applicants

Top Applicants (IPC)

Class F21,2013–2023, worldwide · Source: EPO PATSTAT

PANASONIC INTELLECTUAL PROPERTY 3,883
VALEO VISION FR 2,797
KOITO MANUFACTURING COMPANY 2,531
OPPLE LIGHTING COMPANY 2,343
SIGNIFY HOLDING NL 2,275
TOSHIBA LIGHTING & TECHNOLOGY CORPORATION 1,982
KOITO MANUFACTURING COMPANY JP 1,766
LG INNOTEK COMPANY KR 1,651
SUZHOU OPPLE LIGHTING COMPANY 1,633
MITSUBISHI ELECTRIC CORPORATION 1,591

Top Applicants (CPC)

Class F21,2013–2023, worldwide · Source: EPO PATSTAT

VALEO VISION FR 2,820
SIGNIFY HOLDING NL 2,374
KOITO MANUFACTURING COMPANY JP 1,890
KOITO MANUFACTURING COMPANY 1,722
LG INNOTEK COMPANY KR 1,624
OSRAM DE 1,507
LG ELECTRONICS KR 1,458
PANASONIC INTELLECTUAL PROPERTY JP 1,433
ZUMTOBEL LIGHTING AT 1,349
PANASONIC INTELLECTUAL PROPERTY 1,275